How to fix a faulty clutch in an Audi 80?

I have noticed that my Audi 80's clutch has become increasingly difficult to engage and disengage. It feels like it's slipping and sometimes makes a strange noise. How can I diagnose and repair this issue?

Firstly, it is important to check the fluid levels in your clutch system as low levels can cause slipping. If the levels are fine, the next step would be to inspect the clutch pedal and cable for any signs of wear or damage. It may need to be replaced.